Sichuan starts construction of earthquake warning countdown "big horn" version 2.0
Science and Technology Daily News (Li Di reporter Sheng Li) Do you remember that after many earthquakes in Sichuan, the countdown to the "early trumpet" of earthquake warnings resounding in communities and campuses? The Mainland Earthquake Early Warning Network it will rely on will have "Version 2.0". On April 29, the Chengdu High-tech Institute for Disaster Mitigation (hereinafter referred to as the “Disaster Mitigation Institute”) announced that the second-generation Continental Earthquake Early Warning Network is starting construction in Sichuan. By the end of this year, the network ’s seismic monitoring stations in Sichuan Province will reach 3000 .
The director of the Sichuan Earthquake Early Warning Laboratory and Director of the Disaster Reduction Institute Wang Yun introduced that compared with the first generation warning network, the second generation continental earthquake warning network has shorter response time, higher reliability, wider coverage and more stations Dense, wider service area. With the completion of the deployment of the second-generation continental earthquake warning network, the coverage of the population in the Sichuan earthquake area will reach 99%, which will promote the further improvement of Sichuan province's earthquake monitoring and early warning capabilities.
Earthquake early warning is based on the principle that radio waves are faster than seismic waves. The use of seismic sensors and related technical systems to establish an earthquake early warning network automatically sends early warnings to users who have not been affected by a few seconds to tens of seconds when an earthquake occurs. The second-generation earthquake early warning technology has made a comprehensive upgrade based on distributed processing for front-end early warning stations, mid-range transmission response channels, and terminal processing systems. The cloud computing operation center further optimizes the algorithm and can use 5G communication technology to upgrade the system. responding speed.
"In the future, the second-generation early warning network will reduce the radius of early warning blind spots by 15%, and is expected to have a smaller blind spot radius in local areas, and the false alarm rate and false trigger rate will also be reduced simultaneously." Wang Yuan said.
Wang Yun introduced that the institute is currently on the road to multi-hazard early warning of "sky-space-ground-underground" integrated monitoring and early warning. In the future, it will be committed to providing three-dimensional disaster monitoring information, serving natural disaster safety and serving The government and emergency management departments make decisions.